Roof construction.



E. P. HODGSONV. ROOF CONSTRUCTION.

APPLICATION FILED IANJl, 1911.

1,028,725. Patented June 4,1912.

H v C ATTURIVEYS COLUMBIA PLANMRAPH 0.. wASHlNuToN. u. c,

ERNEST FRANKLIN HODGSON, OF NEEDHAM, IVTASSACHUSETTS.l

ROOF CONSTRUCTION..

. Application filed January 11, 1911.

To all whom it may concern: c

Be it known that I, ERNEST F. HoDGsoN, a citizen of the United States, and a resident of Needham, in the county of Norfolk and State of lilas'sachusetts, have invented a new and Improved Roof Construction, of which the following is a full, clear, and eXact description.

The invention relates to portable houses, and its object is to provide a new'and improved roof construction whereby a free circulation of air is had with a view to keep the interior material dry, to prevent decay and interior sweating duringcold weather, and to keep the roof cool during hot weather.

A further object is to arrange the waterproofing material in such a manner that it is protected against the sun, snow, rain and ice as well as during transportation, thus prolonging the life of the roof. For the purpose mentioned an air space is formed between the outer and inner sheathings, the air space having connection with the atmosphere at both the upper and lower ends,4

and the sheet of waterproof material is interposed between the sheathings.

A practical embodiment of the invention is represented in the accompanying drawings forming a party of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a transverse section of the roof construction; Fig. 2 is a longitudinal section of the same o-n the line 2 2 of Fig. l; and Fig. 3 is an enlarged cross section of a modified form of the roof construction showing the air outlet by way of the ends of the ridge cap.

Single-boarded roofs, as generally used in the portable construction, are hot in summer and frost or sweat in the interior in cold weather. The air space overcomes these objections especially if the air can circulate or pass through the space.

Roofs are made waterproof in two ways, the most popular being a waterproof material over the outside of the roof boarding, as is the common custom in nearlyfvevery roof construction, canvas, metal, or any ready roofing being used. For a portable construction there are three serious objections to this method: First, it is exposed and likely to be damaged during transportation;

5" second7 it is exposed tvo the extreme weather Specification of Letters Patent.

Patented June 4, 1912.

serial No. 601,947.

elements and its life is very short; and, third, all these materials have a shedy7 appearance which is undesirable. The second way that is Aquite extensively used is, afroof withits outside or exposed covering of siding, clapboards or especially milled boards7 under which and against lthe same is a waterproof fiber consisting of most any ofthe ready roongs. Any moisture that passes through the outside covering is carried away by the waterproof fiber. This construction makes a better appearing roof, but on account of the outer boarding coming in contact with the waterproofing directly under it dampness and sweating and a rapid deterioration of the materials is caused. With my improvements presently to be described in detail, the above defects are overcome.

The outer and inner sheathings A and B of the roof are spaced apart to form an air space C, which opens at its lower end into the atmosphere, outside of the side wall D of the house and adjacent to the face board E of the eaves, as will be readily understood by reference to Fig. l. The upper end of the inner sheathing B terminates on the corresponding side of the ridge pole F, preferably made of two beams fastened together by bolts G or other suitable means, and the upper end of the outer sheathing A terminates a short .distance from the corresponding side of the ridge pole F to form a passage C leading from the upper end of the air space C to an outlet air space C2 produced by the use of a metallic ridge cap H passing over the ridge pole F and eX- tending at both sides above the upper por# tion of the outer sheathing A. The lower edge portion H of the ridge cap H is cor rugated and rests on a longitudinally-extending filling in strip I attached. to the o-uter face of the outer sheathing A. Thus by the arrangement described air can pass into the lower end of the air space C and travel up the same between the inner and outer sheathings A and B, and then air passes through the passage C.into the ontlet air space C2, from which air passes under the corrugatio-ns H into the atmosphere. Thus the air is caused to circulate through the air space with a view to keep the interior materials of the roof dry with a view to prevent decay and interior sweating during cold weather.

The air l side of the ridge pole F- and the rafters K,

so that the sheet- L of waterproofmaterial is completely protected against the iniiuence of the heat from the sun, against rain,

. snow, and ice, and also against injury while transporting the port-able house from one place to another.

As illustrated in Fig. 3, the air from the passage C passes up int-o the hollow roll H2 of the ridge cap H3 to finally pass out of said roll at the ends thereof into the atmosphere. It will be understood that the sides of the roll H2 are spaced from the sides of the ridge pole F, so as to allow the air passing up the air space C to travel through the passage Cv into the roll H2. In this case the side extensions H4 of the ridge cap H3 are not corrugated and the sides are fastened on the battens I arranged longitudinally and secured to the outer sheathing A. The sheet L arranged on the top surface of the inner sheathing B is extended up the sides and the top of the ridge pole F, as indicated in Fig. 3, so that the sheet L is protected against the weather and while transporting the roof in sect-ions from one place to another.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

l. A roof construction, comprising a ridge pole, spaced outer and inner sheathings forming between them an air space, the eaves end of which opens into the atmosphere, the outer sheathing terminating short of the ridge pole forming at the side of the ridge pole an air space communicating with the first air space, a longitudinal strip on the outer sheathing adjacent to the upper end thereof, and a 4ridge cap extending over the ridge pole and having a side extension project-ing over the outer sheathing and secured to said strip, said cap forming an air space opening into the atmosphere and into which the space at the side of the ridge pole opens.

2. A roof construction, comprising a ings forming an air space between them, the outer sheathing terminating short of the ridge pole, the eaves end of the said air space opening into the atmosphere, and a ridge cap over the ridge pole and extended over the outer sheathing, the lower edge of the said extended portion of the ridge cap being corrugated and forming with the outer sheathing a second air space co-mmunicating with the upper end. of the said first-named air space and leading to the atmosphere.

3. Aroof construct-ion, comprising spaced outer and inner sheathings forming an air space between them, the eaves end of the air space opening into the atmosphere, a ridOe pole extended above the outer sheathing and spaced a shortfdistance from the upper end of the same, a ridge cap over the ridge pole and extended over the upper portion of the outer sheathing, the lower edge of the said extended portion of the ridge cap being corrugated, and a longitudinallyextending filling in strip held on the outer sheathing and on which rests the said corrugated portion, the said extended portion of the ridge cap yforming with the outer sheathing an air outlet communicating with the upper end of the said air space.

4. A roof construction, comprising a ridge pole, spaced inner and outer sheathings, the outer sheathings terminating short of the ridge pole, t-he said sheathings forming an airspace communicating with the atmosphere at the eaves, sheets of waterproof material extending over the outer surface of the inner sheathings and on the sides of the ridge pole, filling strips on the outer sheathings adjacentrto the upper ends, and a cap on the ridge pole and extending over the outer sheathings .onto the filling strips, the lower edges of the cap being corrugated.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ERNEST FRANKLIN HODGSON.

` Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

` Washington, D. C.

fridge pole, spaced outer and inner sheath- 

